many of the participants, russian immigrants who know something about harsh cold winters. this guy has some advice for californians. >> you guys should man up. it's is not even freezing yet. >> quit complaining? >> quit complaining. >> reporter: at this nursery in pleasant hill, there was worry about keeping plants protected. tonight's temperatures could be a death sentence if precautions aren't taken. >> an unfortunate part of some plants that you have protected if frost aren't going to be protected from freezes. >> reporter: frost blankets were hot sellers. >> i used dish towels and pillow cases. >> they survived? >> they survived. >> reporter: a reminder to bring your furry friends inside, especially the oldest, and youngest thumbs. >> a good rule of them is if you don't want to be outside, your pets don't want to be outside. this is a very vulnerable time for pets with short air. >> reporter: a bed warmer you pop in the microwave keeps your pet toasty for hours. tonight is probably going to be a three dog night. live in walnut creek, ken wayne, ktvu, channel 2 news. >>